March 22, 2025 • Jane Smith

Under the Hood: Performance Optimizations

How we reduced startup time by 40% through cutting-edge web practices.

Overview

In our continuous effort to deliver the best user experience, we implemented several performance improvements across our platform. This article dives deep into the technical strategies that helped reduce startup time by 40%, benefiting both free and paid users.

Code Splitting

We split our codebase into smaller chunks, ensuring that only the necessary code is loaded upfront.

Lazy Loading

Non-critical components and resources are loaded only when needed, reducing initial payload size.

Code Optimizations


// BEFORE: Monolithic file
import * as allFeatures from './all_features.js';

// AFTER: Code splitting with dynamic imports
const featureA = () => import('./feature_a.js');
const featureB = () => import('./feature_b.js');

By using dynamic imports, we reduced the initial JavaScript payload by 62%.

Lazy Loading Strategy

Deferred loading of third-party libraries

Image lazy loading with native loading='lazy'

Results & Metrics

Startup Time

40% improvement vs previous version

Initial Bundle Size

62% size reduction

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